Electric sealing device



' Patented Aug. 2, 1921.

. a H n l F. e M 0 W a C. BARRETT.

ELECTRIC SEALING DEVFCE.

APPLICATION FILED SEPT.1, 1920.

Patented Aug. 2, 1921.

2 SHEETS-SHEET 2- mvmtoz a 02422 elf tome i UNITED STATES CHARLESBARRETT, OF NEW YORK, N. Y.

'ELEo'rRIc SEALING DEVICE.

To all whom it may concern:

Be it known that I, CiTAnLEs BARRETT, a citizen of the United States,and a resident of the city, county, and State of New York, have inventedcertain new and useful Improvements in Electric Sealing Devices, ofwhich the following is a specification' This invention relates tomachines for applying sealing wax or like material to envelops'or otherarticles and lmpressing a suitable seal on said material while it isplastic. The object of the invention is to provide a strong, reliablyoperatlng device of this character of simple constructlon and handledwith ease to produce a large number of sealing impressionsin quicksuccession.

A preferred embodiment of my invention is illustrated by theaccompanying drawings, in which Figure 1 is a front elevation of theimproved seal press; Figs. 2 and 3 are side elevations thereof, withparts in section, showing the device in two different positions; Figs. 4and 5 are vertical sections on line 44 and 5 -5 respectively of Fig; 1;and Figs. 6 and 7 are horizontal sections on lines 66 and 7-7respectively of Fig. 2.

The improved seal press comprises a frame with a base 10, which may beperforated as at 10', Figs. 4 and 7, two standards 11 connected by a"transverse top member 12, and a central guide rod 13 extending upwardlyfrom said member, and secured thereto, say by screwing the reduced end13' to said top member. On said rod 13 is adapted to slide vertically ahandle 14 having an appropriate recess 14, a washer 15 located at thelower opening of-said recess, and lateral vertical rods 16 mounted toslide through suitable openings in the top member 12. The lower ends ofthe rods 16 are secured to the top member 17 of a carrier which also.comprises parallel side members 18 lying adjacent tothe standards 11, onthe inside thereof. To these side members is secured rigidly the sealingwax receptacle 19. the wall of which preferably contains an electricheater of any approved construction, indicated at 20, to which currentmay be supplied by means of wires 21, extending through a hole 18, andconnector plug 22 of well-known character (Fig.1). I

To the lower ends'of the side members 18 are pivoted, by means(bf-horizontal alining pins 23, the side members 24 of a swlnglngSpecification of Letters Patent.

Patented Aug. 2, 1921.

Application filed September 1, 1920. Serial No. 407,464.

frame, the connecting or transverse member of which, 25, carries the dieor seal 26. The pins 23 extend through suitable slots in the standards11. The slot in the lefthand standard in Fig. 1 is a simple'verticalslot, but the slot in the other standard is of a special type, as willbe explained below, said slot having a vertical portion 27 in which thecorresponding. pin 23 moves between the extreme positions indicated inFigs. 2 and 3 respectively. About midway, between itstop and its bottom,the vertical slot 27 communicates with a curved branch slot 28 in whichis adapted to travel at times, a pin 29 projected outwardly from theadjacent side member 24. The upper portion of the slot 27 communicateseither with the branch slot28 (Fig. 2) or with the lower portion of thesaid vertical slot 27 (Fig. 3) according to the position of a dog orswitch 30 pivoted to said standard 11 at 31. At the same point is alsopivoted a sector 32 having two notches 32 adapted to be engaged by theend of a' retaining pawl 33 pivoted to said standard 11 at 34. A spring35 presses the pawl 33 toward the sector 32, and another spring 36,coiled around the pivot 31, has its respective ends secured to theswitch 30 and to the sector 32 respectively, so as to tend to hold themin a definite position relatively to each other, yet allowing the switchto yield while the sector remains undisturbed, under certain conditionsexplained below. A protecting housing 37 may be provided for said switchand sector.

To the standard 11 is further pivoted at 38, to swing about a transversehorizontal axis, a bail or support 39 the central portion of which formsan axle on which is mounted a moistening roller 40, of suitableabsorbent material. This roller is shown located above an opening formedbetween extensions or feet 10 of the base 10. A spring 41 extendingthrough one end of the bail 39 and coiled around a stationary pin 42,tends to throw the roller into the lower or inner position shown inFigs. 2 and 4.

Thesealing wax receptacle 19 has its lower portion contracted in funnelfashion, and its outlet is controlled by a valve 43, located within thereceptacle and movable vertically.

For this purpose, the valve is secured to a.

rod 44, guided in a flange 19 of said receptacle, and connected at thetop with a rod 45 movable vertically in guides 18 on one of the sidemembers 18. The lower end of thefrod 45 is provided with 'a cam portion45; eccentric to the'pivot-axis 23 (see Fig.

5) and extending with a slidingfit through a horizontal pin 46 which issecured to the adjacent side member 24, at a distance from' the-pivot23,'in such a. manner that said pin 46 may turn about its own horizontalaxis,

relatively to said member 24.

Finally, a spring 47, coiled .around the rod- 13 engages the upperwasher 15 referred to above, and a similar lower washer 48 resting onthe top member '12, said spring tending to-raise the receptacle 19 andthe other vertically movable parts'to the normal position shownin Figs.1, 2,4and 5.

The operation is as follows: The receptacle19 is supplied with scalingwaxpwhich is kept molten by the electric heater. 20. The sealing deviceand the article towhichthe'seal is to-be applied having Y been broughtto the properrelative position and the parts being in the normalpositionshown in Figs. 1, 2, 4, 5,. 6 and 7, the handle 14 is pressed down totheposition illustrated by This of coursebrings the receptacle 19;downtogether with its carrier.

During this movement, the pin 29 on the diecarrying frame travels firstin the verticalslot 27, but is soon deflected into the lateral branchslot 28 by the switch 30..which at thattimeprojects across the verticalslot.

1 32 positively, but will simply prevent accidental movement, said pawlyielding when the pin 29 causes the sector 32 to swing on its pivot 31.The travel of the pin 29 in the slot 28 causes the die-carrying frame toswing on the pivot 23, the die 26 being thus carried into contact withthe moistening roller 40, and sweeping past such roller which thusmoistens the entire surface of the die, the roller swingin to theposition shown in Fig. 3, against the tension of the spring 41.The-swinging of the die-carry-. ing frame thus brings the die 26from itsnormal position which is directly below the outlet of the receptacle19(Fig. 4) to a sidewise position (Fig. 3) and at this time the valve 43is opened by the lifting action of the pin 46 (as it swings about thecenter 23) on the cam portion 45" of the rod 45. Sealing wax willthereforepour out of the receptacle 19 and through the base opening 10on the article below. \Vhen the amount of waxdelivered is deemedsuficient, the operator releases the handle 14, and the spring 47 bringsthe receptacle'lQ back to the upper position, the pins 23 travelingupward in their vertical guide slots, and the pin 29 travelingtothe'right (Fig. 3) in the slot 28, and then up in the slot .27, to theposition shownin Fig. 2. During this return movement, the pin 29 engagesthe switch 30 and swings it aside from the position shown in Fig. 3; butas soon as the pi'n29 has cleared the switch, the spring 36 restores theswitch 30 to the position shown in Fig.3. The return movement of the pin29 causes the frame carrying the die 26 to swing back to its normalvertical position, andthe cooperation of the pin 46 with the cam portion45" causes-the valve 43 to be closed during this return movement. -T;hedevice is then again in the position illustrated by Figs. 11, 2, 4,v 5,6, and 7, except that the sector 32, spring 36, and switch 30 remain inthe position illustrated Fig. 3. V

The operator then again presses the handle 14 downward, carrying thereceptacle 19 down as before. The pin 29however, instead of entering thelateral branch slot 28, will on this seconddown-stroke travel straightdown in the vertical slot 27. They frame carrying the die 26. willtherefore have'no swinging movement, but the die 26 will be carrieddowntomake an impression on the blob of sealing wai previouslydeposited. The valve 43 of course remains closed, owing to-the fact thatthere isno swinging movementof the die-carrying frame. v During. its

downward movement, thepin 29 comes in 7 contact with the lower orright-hand end of the sector 32, which end at that time pro-j ects intothe path of the vertical travel of the said pin. At the moment the pin29 thusengages the said endof the sector 32, the upper pin 23 hasdescended in the slot 27 suflicie'ntly to be below the upper'end ofthe'switch 30. The further downward movement of thepin 29 swings thesector 32' back into the position shown in Fig. 2, the spring 36yielding to allow the switch 30 to remain in the position shownin Fig.3, since the pin 23 in its lower position prevents said switch fromswinging to the right. The pressure of the pawl 33 against the inclinedfaces of: the notches. 32" will cause the sector 32 tosnap into eitherofits end positions. The operator then again releases the handle 14, andall the parts return tothe position shown in Figs. 1, 2, 4, 5, 6 and7,the spring 36 throwing the switch 30. into the position illustrated byFig. 2, as soon as the pin 29 in'its upward movement clears the saidswitch. 7

I claim as my invention: 7 g 1. A deviceof the class described,comprising a frame, a receptacle movableup and down relatively to saidframe, a valve controlling the outlet of said receptacle,a

ment of the receptacle will cause the valve to open and the die to moveaside, while the next downward movement of the receptacle will cause thedie to press on the material previously delivered from the receptacle,the valve remaining closed during such second downward movement. 1

2. A device of the class described, comprising a frame, a receptaclemovable up and down relatively to said frame, a valve controlling theoutlet of said receptacle, a die-carrying frame connected with saidreceptacle and mounted to swing relatively thereto about a horizontalaxis, and means whereby one downward movement of the receptacle willcause the valve to open and the swinging frame to carry the dieaside,while the next downward movement of the receptacle will cause thedie to press on the material previously delivered from the receptacle,the valve remaining closed during such second downward movement'of thereceptacle. V

8. A device of the class described, comprising a frame provided with anupright slot and with a branch slot extending from a point between theends of said upright slot, a receptacle movable up and down relativelyto said frame and provided with a pin arranged to travel in said uprightslot, a movable switch located at the junction of the two slots, toconnect the upper portion of the upright slot either with the lowerportion thereof or with said branch slot, a swinging frame connectedwith said receptacle and mounted to swing relatively thereto about ahorizontal axis, said swinging frame having a pin adapted to traveleither exclusively in the upright slot,ror partly in the branch slot,according to the position of the switch, a die carried by said swingingframe and adapted to occupy a position either beneath the outlet of thereceptacle or to one side thereof, a valve controlling said outlet andoperated by the swinging movement of said die-carrying frame, and means,operated by said swinging frame, for causing the position of the switchto be reversed at each downward movement of the receptacle.

4. A device of the class described, comprising a frame provided with anupright slot and with a branch slot extending from a point between theends of said upright slot. a receptacle movable up and down relativelyto said frame and provided with a pin arranged to travel in said uprightslot, a movable switch located at the junction of the two slots, toconnect the upper portion of the upright slot either with the lowerportion thereof or with said branch slot, a

swinging frame connected with said receptacle and mounted to swingrelatively thereto about a horizontal axis, said swinging frame havingapin adapted to travel either exclusively in the upright slot, or partlyin the branch slot, according to the position of the switch, a diecarried by said swinging frame and adapted to occupy a position eitherbeneath the outlet of the receptacle or to one side thereof, a valvecontrolling said outlet and operated by the swinging movement of saiddie-carrying frame, apivoted sector the ends of which projectalternately into the path of the pin on the diecarrying frame, a springconnection between said sector and said switch, and means for holdingsaid sector against accidental movement.

5. A device of the class described, comprising a frame, a receptaclemovable up and down relatively to said frame, a valve controlling theoutlet of said receptacle, a die connected with said receptacle movably,and means whereby one downward movement of the receptacle will cause thevalve to open and the die to move aside, while the next downwardmovement of the receptacle will cause the die to press on the materialpreviously delivered from the receptacle, the valve remaining closedduring such second downward movement, and moistening means with whichthe die comes in contact when moved aside.

6. A device of the class described, comprising a frame, a receptaclemovable up and down relatively to said frame, a valve controlling theoutlet of said receptacle, and means, operated by the movement of thereceptacle, for opening said valve during'the downward movement of thereceptacle, as the latter approaches the article on which the materialdelivered from the receptacle is to be deposited.

7. A device of the class described, com prising a frame having twostandards and a top member, a carrier of U-shape movable up and downwithin said frame and provided with a handle, a spring tending to movesaid carrier upward, a receptacle .secured to said carrier, a swingingframe pivoted to the lower end of the carrier, a die secured to saidswinging frame, a valve controlling the outlet of said receptacle, andmeans whereby one downward movement of the receptacle will cause thevalve to open and the die to move aside, while the next downwardmovement of the receptacle will cause the die to press on the materialpreviously delivered from the receptacle, the valve remaining closedduring such second downward movement.

CHARLES BARRETT.

